Web/API/RTCDTMFToneChangeEvent/RTCDTMFToneChangeEvent

This is an experimental technologyCheck the Browser compatibility table carefully before using this in production.

The RTCDTMFToneChangeEvent() constructor creates a new RTCDTMFToneChangeEvent.

Syntax

 var event = new RTCDTMFToneChangeEvent(type, options);

type: A DOMString containing the name of the event. This is always "tonechange".
options: A dictionary of type RTCDTMFToneChangeEventInit, which may contain one or more of the following fields:

tone A DOMString containing a single DTMF tone character which has just begun to play, or an empty string ("") to indicate that the previous tone has stopped playing. See Tone characters for details on what characters are permitted.

A newly-created RTCDTMFToneChangeEvent, configured as specified in the provided options.

The digits 0-9: These characters represent the digit keys on a telephone keypad.
The letters A-D: These characters represent the "A" through "D" keys which are part of the DTMF standard but not included on most telephones. These are not interpreted as digits. Lower-case "a"-"d" automatically gets converted to upper-case.
The pound/hash sign ("#") and the asterisk ("*"): These correspond to the similarly-labeled keys which are typically on the bottom row of the telephone keypad.
The comma (","): This character instructs the dialing process to pause for two seconds before sending the next character in the buffer.

All other characters are unrecognized and will cause insertDTMF() to throw an InvalidCharacterError exception.

Specification	Status	Comment
WebRTC 1.0: Real-time Communication Between BrowsersThe definition of 'RTCDTMFToneChangeEvent()' in that specification.	Candidate Recommendation	Initial definition.

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`RTCDTMFToneChangeEvent()` constructor	Chrome Full support 27	Edge Full support ≤18	Firefox Full support 52	IE No support No	Opera Full support Yes	Safari ?	WebView Android Full support 4.4	Chrome Android Full support 27	Firefox Android Full support 52	Opera Android Full support Yes	Safari iOS ?	Samsung Internet Android Full support 1.5